.nav{
 	       height:80px;
 	       line-height:80px;
 	       background:#ff0066;
 	       border-radius:0 0 15px 15px;  

 	}
div.desc{
  text-align:center;
  
  width:all;
  font-size:25px;
  
  }
  div.mac{
  	width: all;
  	height: 100px;
  	background-color:#ff0066;
  }
 	